I probably know who took the lost jewelry, but can the police find evidence after there is no evidence to report the case? The loss of property shall be reported to the public security organ in time. After accepting the case, the public security organ shall, according to the specific circumstances, investigate the case that meets the conditions for filing, collect evidence and solve the case according to law; The owner can provide relevant clues to the public security department and actively cooperate with the investigation of the public security department. According to Article 166 of the Provisions on the Procedure of Public Security Organs in Handling Criminal Cases, public security organs should immediately accept citizens' seizure, reporting, accusation, reporting or criminal suspects' voluntary surrender, inquire about the situation, and make a written record. After verification, the person who delivered, reported, accused, reported or voluntarily surrendered should sign and print their fingerprints. When necessary, audio or video recordings shall be made. Article 169 The staff members of the public security organ who accept a complaint or tip off shall explain to the complainant or informant the legal responsibility for a false accusation. However, as long as there is no fabrication of facts or evidence, even if the facts of the accusation or report are different, even if the accusation is wrong, it should be strictly distinguished from the false accusation. Article 175 If a public security organ, after accepting a case and after examination, considers that there are facts of a crime that need to be investigated for criminal responsibility and that it is under its own jurisdiction, it shall file the case with the approval of the person in charge of the public security organ at or above the county level; If it is believed that there is no criminal fact, or the criminal fact is obviously minor and does not need to be investigated for criminal responsibility, or there are other circumstances where criminal responsibility is not investigated according to law, the case shall not be filed with the approval of the person in charge of the public security organ at or above the county level. Article 187 The public security organ shall promptly investigate a criminal case that has been filed, and comprehensively and objectively collect and obtain evidence that the criminal suspect is guilty or not guilty, or that the crime is minor or serious.